Precision Big Bang Nucleosynthesis with the New Code PRIMAT
Abstract
Precision on primordial abundances, deduced from observations, have now reached the percent level for 4He and deuterium. Precision on big bang nucleosynthesis (BBN) predictions should, hence, reach the same level. The uncertainty on the 4He mass fraction is strongly affected by theoretical uncertainties on the weak reaction rates that interconvert neutrons with protons. All these corrections have been calculated in a self-consistent manner and implemented in a new, and public, Mathematica code PRIMAT, together with an extensive data base of reaction rates. Both can be obtained at http://www2.iap.fr/users/pitrou/primat.htm.
Keywords
Cite
@article{arxiv.1909.12046,
title = {Precision Big Bang Nucleosynthesis with the New Code PRIMAT},
author = {Cyril Pitrou and Alain Coc and Jean-Philippe Uzan and Elisabeth Vangioni},
journal= {arXiv preprint arXiv:1909.12046},
year = {2019}
}
Comments
To appear in JPS Conference Proceedings (The 15th International Symposium on Origin of Matter and Evolution of Galaxies)